H-18/T
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Chest Set, electrical, H-18/GT is a telephone type transmitter mounted on a chest plate by an adjustable steel arm. This equipment is used with Radio Set AN/CRD-2, Radio Set AN/TTG-1, Switchboard BD-71, Switchboard BD-72, Switchboard BD-91, Switchboard BD-101, Flash Range Set GR-4, Flash Range Set GR-8, Radio Set AN/TRL, Switchboard BD-110, Radar Set AN/FPG-2; Telephone Central Office Set TC-1, Telephone Central Office Set TC-2, and Telephone Central Office Set TC-4.
Specifications
- CONSISTS OF
- 1 Chest Unit H-17/GT
- 1 Cord CX-67/GR
- 1 Signal Strap ST-25
- 1 Switch
- PHYSICAL DESCRIPTION
- Dimensions: (Chest Unit)
- Height - 6 inches (152.40 mm)
- Width - 2-1/4 inches (57.15 mm)
- Depth - 4-1/2 inches (114.30 mm)
- Weight - Not rated
- Microphone Data
- Type - Carbon
- Mounting - Chest Plate Mounted
- Cord Data
- Length - Not rated
- Number of Conductors - 3
- Number of Connectors - 2
- Connector Designation - JK-53 Plug (Chest Set End) U-31/GT (System End)
- INPUT
- Operating current - 60 milliamperes
- OUTPUT
- Nominal Impedance - 30 ohms
- Frequency - 300 to 3,000 cps
- Switch Function
- Connects Microphone circuit and control circuit contacts
- Switch Electrical Ratings
- Current Rating - 2 amperes control circuit 150 ma microphone circuit
- Connector Designation - Microphone Jack mates with Plug PL-291 Headset Jack mates with Plug PL54
- Environmental Limitations
- Equipment Operating:
- Temperature - 80° F to + 160° F
- Elevation - Up to 10, 000 feet above sea level
- Relative Humidity - Up to 100 percent including condensation caused by temperature changes
- Vibration - No mechanical resonance below 55 cps
Reference FIles
- MIL-C-13064
- MIL-M-13189
- SC-D-17105
- ARCS Research and Development Corp Standardization of Chest Sets Purification Report Contract DA 36-039, SC66416, Final Report Technical Analysis Phase Contract DA 36-039, SC66416
- MSS 5965-2